发明名称 |
Hamming data correlator having selectable word-length |
摘要 |
A data correlator has a selectable word length for hamming distance measurement. The correlator includes four 32-bit correlators which output a correlation result and a carry signal. The input of the four 32-bit correlators is controlled by a data select circuit, which inputs serial data to each of the four 32-bit correlators in accordance with the selected word length. When the 32-bit length is selected, the data select circuit simultaneously supplies serial data to each of the 32-bit correlators; when the 64-bit length is selected, the data select circuit effectively provides two simultaneously-performing 64-bit correlators; when the 128-bit length is selected, data select circuit streams the serial data through the four 32-bit correlators. A summation circuit preserves the carry-in signal of each 32-bit correlation in order to generate two 64-bit correlation values and one 128-bit correlation value. The data comparator also includes a CPU bus interface for sharing data on a CPU bus and a control register for automatic addressing of internal registers of the data comparator.
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申请公布号 |
US5218562(A) |
申请公布日期 |
1993.06.08 |
申请号 |
US19910767330 |
申请日期 |
1991.09.30 |
申请人 |
AMERICAN NEURALOGIX, INC. |
发明人 |
BASEHORE, PAUL M.;WATSON, CHARLES D. |
分类号 |
G06F17/15 |
主分类号 |
G06F17/15 |
代理机构 |
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主权项 |
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